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A pirate is swimming 4.85 feet under water as he approaches a rival ship. When he is 30.5 feet from the ship, he looks 61.5 degrees up from the horizontal and sees the flag at the top of the ships mast. How tall does the pirate think the ship is? How tall is the ship actually? Please Explain.
A bead of mass m = 3.10 kg is released from point A and slides on the frictionless track as shown in the figure below. The height of A is ha = 6.70 m. Determine the net work done by the force of gravity in moving the bead from A to C
Bob and Ray push on a door from opposite sides. They both push perpendicular to the door. Bob pushes 0.63 m from the door hinge with a force of 89 N. What is the net torque on the door
A system consists of two particles. Particle 1 with mass 2.0 kg is located at (2.0 m, 6.0 m) and has a velocity of (2.6 m/s, 4.1 m/s). find the position and the velocity of the center of mass of the system
A 1.10m long ramp is inclined at 16? to the horizontal. A solid ball is released from rest at the top of the ramp. Find its translational acceleration
A large 2.00×104 aquarium is supported by four wood posts (Douglas fir) at the corners, By how much is each post compressed by the weight of the aquarium
two rockets are flying in the same direction and are side by side at the instant their retrorockets fire. rocket a has
A football is kicked at an angle of 37.0 degrees with a velocity of 20.0 m/s. calculate the velocity at the maximim height
A passenger train is travelling at 32 m/s when the engineer sees a freight train 384 m ahead of his train travelling in the same direction on the same track. The freight train is moving at a speed of 5.7 m/s.
Four charged particles rest at the corners of a square of side a = 0.30 m. Determine the electric field at the position of particle 3 as well as the electric force on particle 3
A mover's dolly is used to transport a refrigerator up a ramp into a house. The refrigerator has a mass of 108 kg. What is the work done on the refrigerator by the machine
At Canobie Lake Park NH the Starblaster Ride launches riders straight up into the air with a launch speed of 30 m/s, calculate the work done by the nonconservative forces
A body of mass 5kg is moved along a straight line and its displacement (x) varies with time(t) according to the relation : t= [(x)^(1/2) ] +1 Find the work done in moving the body for first 10 seconds
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